CN212428185U - Damping steel frame device for reinforcing weak building structure at bottom layer - Google Patents
Damping steel frame device for reinforcing weak building structure at bottom layer Download PDFInfo
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- CN212428185U CN212428185U CN202021997243.4U CN202021997243U CN212428185U CN 212428185 U CN212428185 U CN 212428185U CN 202021997243 U CN202021997243 U CN 202021997243U CN 212428185 U CN212428185 U CN 212428185U
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Abstract
The invention relates to a damping steel frame device for reinforcing a building structure with weak bottom, which comprises a damping steel frame structure arranged at the bottom of the building structure, wherein the damping steel frame structure comprises a portal steel frame and dampers, the portal steel frame comprises two stand columns which are arranged at intervals, the upper ends of the two stand columns are connected through a cross beam, the lower ends of the stand columns are connected with a foundation of the building structure, the dampers are arranged at beam column nodes of the portal steel frame, the dampers are provided with three and sequentially hinged to form a triangular mechanism, the three hinge points of the triangular mechanism are respectively and compositely hinged with the stand columns, the cross beam and the beam column nodes through hinge pins, the upper ends and the lower ends of the stand columns are respectively connected with a support column of the building structure through steel hoops, the device is reinforced by adopting the damping steel frame structure, has simple structure and reasonable design, is convenient to install and construct, the anti-seismic performance of the structure can be effectively improved.
Description
Technical Field
The invention relates to a damping steel frame device for reinforcing a building structure with a weak bottom layer, and belongs to the technical field of seismic reinforcement of building structures.
Background
Some buildings in China generally adopt a reinforced concrete frame-earthquake-resistant wall structure due to commercial use or public use and the like, the bottom layer of the building has a large using space, the upper part of the structure is generally used for offices or houses and the like, more walls are arranged by needing more partitions, and a rigid-upper-flexible form is formed. Because the bottom layer of the building needs a larger use space, the adoption of the method of increasing the section and the additional support can greatly occupy the use space and is difficult to implement; in addition, the methods of reinforcing the carbon fiber cloth and reinforcing the prestressed tendons only can increase the ductility of the structure, but cannot improve the lateral stiffness, and are not suitable for reinforcing weak buildings at the bottom layer.
Disclosure of Invention
The invention provides a damping steel frame device for reinforcing a weak building structure at the bottom.
The damping steel frame device comprises a damping steel frame structure arranged at the bottom of a building structure, the damping steel frame structure comprises a portal steel frame and dampers, the portal steel frame comprises two upright posts arranged at intervals, the upper ends of the two upright posts are connected through a cross beam, the lower ends of the upright posts are connected with a foundation of the building structure, the dampers are installed at beam-post nodes of the portal steel frame, the dampers are provided with three and sequentially hinged to form a triangular mechanism, the three hinged points of the triangular mechanism are respectively and compositely hinged with the upright posts, the cross beam and the beam-post nodes through hinge pins, and the upper ends and the lower ends of the upright posts are respectively connected with a support post of the building structure through a steel hoop.
Furthermore, the lower end of the upright post is provided with an end plate, a through hole is formed in the end plate, and the bolt penetrates through the end plate and is fixedly connected with the foundation of the through hole building structure.
Furthermore, the upright post, the cross beam and the beam-column joint are all fixedly provided with connecting keys for mounting the pin shaft.
Furthermore, both ends of the damper are provided with connecting pin heads.
Furthermore, the steel staple bolt includes side column staple bolt, corner post staple bolt, and the pillar that is in building structure bottom limit portion is connected with matched with stand through side column staple bolt, and the pillar that is in building structure bottom bight is connected with matched with stand through corner post staple bolt.
Further, the corner post staple bolt includes two Z shaped steel boards and a W shaped steel board, the side post staple bolt includes four W shaped steel boards, and W shaped steel board, Z shaped steel board tip are provided with the flange board, have seted up the bolt hole on the flange board, and the flange board of the Z shaped steel board of corner post staple bolt and the flange board on adjacent Z shaped steel board, the W shaped steel board are through bolted connection, and the flange board on the W shaped steel board of side post staple bolt and the flange board on the adjacent W shaped steel board are through bolted connection.
Compared with the prior art, the invention has the following beneficial effects: adopt damping steel frame construction to consolidate, simple structure, reasonable in design, installation construction is convenient, has good reinforcement control effect to the weak building structure in bottom, can effectively promote the anti-seismic performance of structure.
Drawings
The invention is further described with reference to the following figures.
FIG. 1 is a general schematic diagram of a weak building structure with a plurality of damping steel frames reinforced at the bottom layer;
FIG. 2 is a partial schematic view of a single damped steel frame reinforced sub-frame;
FIG. 3 is a schematic diagram of the construction of a damping steel frame;
FIG. 4 is a schematic view of the construction of the triangular mechanism;
FIG. 5 is a schematic view of the construction of the side column hoop;
fig. 6 is a schematic structural view of the corner post hoop.
In the figure: 1-building structures; 101-the foundation of the building structure; 102-a pillar; 2-damping steel frame construction; 21-portal steel frame; 22-damper, 201-column; 202-a cross beam; 203-beam-column node; 204-end plate; 206-connecting pin head; 3-steel anchor ear; 31-side column hoops; 32-corner post hoops; 301-Z steel plate; 302-W type steel plate; 303-a flange plate; 4-a bolt; 5-a pin shaft; 6-connecting key, 7-first damper; 8-a second damper; 9-a third damper; 10-triangular mechanism.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1-6, a damping steel frame device for reinforcing a weak building structure at the bottom comprises a damping steel frame structure 2 arranged at the bottom of a building structure 1, wherein the damping steel frame structure comprises a portal steel frame 21 and a damper 22, the portal steel frame comprises two upright posts 201 arranged at intervals, the upper ends of the two upright posts are connected with a cross beam 202, the lower ends of the upright posts are connected with a foundation 101 of the building structure, the damper is arranged at a beam-column node 203 of the portal steel frame, the three dampers are sequentially hinged to form a triangular mechanism 10, three hinge points of the triangular mechanism are respectively and compositely hinged with the upright posts, the cross beam and the beam-column node through a pin shaft 5 to realize the control of the deformation of the upper beam-column node of the portal steel frame, the upper ends and the lower ends of the upright posts are respectively connected with a strut 102 of the building structure through steel hoops 3, and the sizes of the steel hoops are matched, the upright post of the damping steel frame structure can be fastened with the support post of the building structure through splicing connection, so that fixation is realized.
In this embodiment, the stand lower extreme is provided with end plate 204, has seted up the through-hole on the end plate, and the bolt passes on the end plate and carries out fixed connection with through-hole building structure's basis, realizes linking firmly of damping steel frame construction and building structure's basis.
In this embodiment, all fixed mounting has the connecting key that is used for the installation round pin axle on stand, crossbeam, the beam column node.
In this embodiment, the damper is provided with connecting pin heads 206 at both ends.
In this embodiment, the steel anchor ear includes side column anchor ear 31, corner post anchor ear 32, and the pillar that is in building structure bottom limit portion is connected with matched with stand through the side column anchor ear, and the pillar that is in building structure bottom bight is connected with matched with stand through the corner post anchor ear.
In this embodiment, the corner post staple bolt includes two Z shaped steel boards 301 and a W shaped steel board 302, the side post staple bolt includes four W shaped steel boards, W shaped steel board, Z shaped steel board tip are provided with flange board 303, bolt hole 5 has been seted up on the flange board, the accessible bolt splices it fixedly, realize linking firmly each other of damping steel frame's stand and building structure's pillar, the flange board and adjacent Z shaped steel board of the Z shaped steel board of corner post staple bolt, flange board on the W shaped steel board is connected through bolt 4, flange board on the W shaped steel board of side post staple bolt and the flange board on the adjacent W shaped steel board are connected through bolted connection.
The construction steps are as follows:
step S1: connecting pin heads at two ends of a first damper 7 are respectively placed with connecting pin heads of a second damper 8 and a third damper 9, the rest connecting pin heads of the second damper are placed with the rest connecting pin heads of the third damper, and holes which are beneficial to a pin shaft to pass through to realize connection are reserved on the connecting pin heads;
step S2: connecting keys are respectively arranged on beam-column joints, cross beams and upright columns on the inner side of the upper part of the portal steel frame, and the three connecting keys are respectively connected with pin shafts at three corners of the triangular mechanism to complete the installation of the damper;
step S3: fixing an end plate at the bottom end of an upright post of the portal steel frame at a specified position on the foundation of the building structure by using bolts;
step S4: the pillars at the bottom edge of the building structure are connected with the matched upright posts through the side post hoops, and the pillars at the bottom corner of the building structure are connected with the matched upright posts through the corner post hoops.
The design adopts nondestructive assembly type reinforcement, so that the construction is simple and rapid, the construction period can be shortened, and meanwhile, the building structure cannot be damaged; the damping steel frame is provided with the damper, and the characteristics of the damping steel frame are utilized, so that the damping steel frame structure can generate adaptive lateral stiffness under the action of an earthquake, and the reinforcement requirements of the building structure under different earthquake intensities are met; the design utilizes the characteristic that the larger the acting force borne by the damper is, the larger the damping force provided by the damper is, so that the damping steel frame structure can provide corresponding rigidity requirements under different earthquake actions, and further the earthquake resistance of the building structure is improved.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using a bolt or screw connection) can also be understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the embodiment, the T-shaped part can increase the contact surface of the whole structure, so that the resistance generated by friction is increased, and the stability of the structure is improved; the concave steel groove and the steel plate assembly are anchored in the capping beam unit and the pier beam through the studs, so that the stability of the structure is greatly improved; compared with the traditional cast-in-place construction, the prestressed tendon tensioning and anchoring mode greatly shortens the required working time, effectively shortens the construction period on large and medium-long line bridge engineering and improves the efficiency; the shear key forms shear force transmission between the pier beam and the cap beam through friction among the universal hinge, the connecting steel plate and the concave steel groove, so that a combined working form is formed, and the shear resistance of the splicing surface is effectively improved.
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a reinforce weak building structure's in bottom damping steel frame device which characterized in that: including setting up the damping steel frame construction at the building structure bottom, damping steel frame construction includes gate-type steel frame and attenuator, gate-type steel frame includes two stands that the interval set up, and two stand upper ends are connected through the crossbeam, and the stand lower extreme is connected with building structure's basis, and the beam column node department at gate-type steel frame is installed to the attenuator, and the attenuator sets up three and articulated formation triangle-shaped mechanism in proper order, and the three pin joint of triangle-shaped mechanism is articulated through round pin axle and stand, crossbeam, beam column node complex respectively, and the lower extreme is connected with building structure's pillar through the steel staple bolt respectively on the stand.
2. The damped steel frame assembly for reinforcing an underlying weak building structure according to claim 1, wherein: the stand lower extreme is provided with the end plate, has seted up the through-hole on the end plate, and the bolt passes on the end plate and carries out fixed connection with through-hole building structure's basis.
3. The damped steel frame assembly for reinforcing an underlying weak building structure according to claim 1, wherein: and the upright post, the cross beam and the beam-column joint are all fixedly provided with connecting keys for mounting pin shafts.
4. The damped steel frame assembly for reinforcing an underlying weak building structure according to claim 1, wherein: and connecting pin heads are arranged at two ends of the damper.
5. The damped steel frame assembly for reinforcing an underlying weak building structure according to claim 1, wherein: the steel staple bolt includes side column staple bolt, corner post staple bolt, and the pillar that is in building structure bottom limit portion is connected with matched with stand through the side column staple bolt, and the pillar that is in building structure bottom bight is connected with matched with stand through the corner post staple bolt.
6. The damped steel frame assembly for reinforcing an underlying weak building structure according to claim 5, wherein: the corner post staple bolt includes two Z shaped steel boards and a W shaped steel board, the side post staple bolt includes four W shaped steel boards, and W shaped steel board, Z shaped steel board tip are provided with the flange board, have seted up the bolt hole on the flange board, and the flange board of the Z shaped steel board of corner post staple bolt and the flange board on adjacent Z shaped steel board, the W shaped steel board are through bolted connection, and the flange board on the W shaped steel board of side post staple bolt and the flange board on the adjacent W shaped steel board are through bolted connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021997243.4U CN212428185U (en) | 2020-09-14 | 2020-09-14 | Damping steel frame device for reinforcing weak building structure at bottom layer |
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| CN202021997243.4U CN212428185U (en) | 2020-09-14 | 2020-09-14 | Damping steel frame device for reinforcing weak building structure at bottom layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980437A (en) * | 2020-09-14 | 2020-11-24 | 福州大学 | Damping steel frame device for reinforcing weak building structure at bottom layer and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980437A (en) * | 2020-09-14 | 2020-11-24 | 福州大学 | Damping steel frame device for reinforcing weak building structure at bottom layer and construction method |
| CN111980437B (en) * | 2020-09-14 | 2024-06-04 | 福州大学 | Damping steel frame device for reinforcing weak building structure at bottom layer and construction method |
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